Magnesium fluoride

Magnesium fluoride
	Magnesium fluoride
Names
	Other names Sellaite; Irtran-1
Identifiers
CAS Number	7783-40-6 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	22952 ;
ECHA InfoCard	100.029.086
EC Number	231-995-1;
PubChem CID	24546;
RTECS number	OM3325000;
UNII	5N014C7IWU ;
CompTox Dashboard (EPA)	DTXSID7052523 ;
	InChI InChI=1S/2FH.Mg/h21H;/q;;+2/p-2 Key: ORUIBWPALBXDOA-UHFFFAOYSA-L ; InChI=1/2FH.Mg/h21H;/q;;+2/p-2 Key: ORUIBWPALBXDOA-NUQVWONBAK;
	SMILES F[Mg]F; [Mg+2].[F-].[F-];
Properties
Chemical formula	MgF2
Molar mass	62.302 g·mol−1
Appearance	Colorless to white tetragonal crystals
Density	3.148 g/cm3
Melting point	1,263 °C (2,305 °F; 1,536 K)
Boiling point	2,260 °C (4,100 °F; 2,530 K)
Solubility in water	0.013 g/(100 mL)
Solubility product (Ksp)	5.16⋅10−11
Solubility	Soluble in nitric acid; Slightly soluble in acetone; Insoluble in ethanol;
Magnetic susceptibility (χ)	−22.7⋅10−6 cm3/mol
Refractive index (nD)	1.37397
Structure
Crystal structure	Rutile (tetragonal), tP6
Space group	P42/mnm, No. 136
Thermochemistry
Heat capacity (C)	61.6 J/(mol⋅K)
Std molar; entropy (S⦵298)	57.2 J/(mol⋅K)
Std enthalpy of; formation (ΔfH⦵298)	−1124.2 kJ/mol
Gibbs free energy (ΔfG⦵)	−1071 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H303, H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 0 0
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	2330 (rat, oral)
Safety data sheet (SDS)	ChemicalBook
Related compounds
Other anions	Magnesium chloride; Magnesium bromide; Magnesium iodide;
Other cations	Beryllium fluoride; Calcium fluoride; Strontium fluoride; Barium fluoride; Radium fluoride;
Related compounds	Hydrogen fluoride; Zinc fluoride; Aluminium fluoride;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Magnesium fluoride is an ionically bonded inorganic compound with the formula Mg F₂. The compound is a colorless to white crystalline salt that is transparent over a wide range of wavelengths, such that it is used in the optical windows of space telescopes. It occurs naturally as the rare mineral sellaite.